1 /*
2  * ascot2e.c
3  *
4  * Sony Ascot3E DVB-T/T2/C/C2 tuner driver
5  *
6  * Copyright 2012 Sony Corporation
7  * Copyright (C) 2014 NetUP Inc.
8  * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
9  * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20   */
21 
22 #include <linux/slab.h>
23 #include <linux/module.h>
24 #include <linux/dvb/frontend.h>
25 #include <linux/types.h>
26 #include "ascot2e.h"
27 #include <media/dvb_frontend.h>
28 
29 #define MAX_WRITE_REGSIZE 10
30 
31 enum ascot2e_state {
32 	STATE_UNKNOWN,
33 	STATE_SLEEP,
34 	STATE_ACTIVE
35 };
36 
37 struct ascot2e_priv {
38 	u32			frequency;
39 	u8			i2c_address;
40 	struct i2c_adapter	*i2c;
41 	enum ascot2e_state	state;
42 	void			*set_tuner_data;
43 	int			(*set_tuner)(void *, int);
44 };
45 
46 enum ascot2e_tv_system_t {
47 	ASCOT2E_DTV_DVBT_5,
48 	ASCOT2E_DTV_DVBT_6,
49 	ASCOT2E_DTV_DVBT_7,
50 	ASCOT2E_DTV_DVBT_8,
51 	ASCOT2E_DTV_DVBT2_1_7,
52 	ASCOT2E_DTV_DVBT2_5,
53 	ASCOT2E_DTV_DVBT2_6,
54 	ASCOT2E_DTV_DVBT2_7,
55 	ASCOT2E_DTV_DVBT2_8,
56 	ASCOT2E_DTV_DVBC_6,
57 	ASCOT2E_DTV_DVBC_8,
58 	ASCOT2E_DTV_DVBC2_6,
59 	ASCOT2E_DTV_DVBC2_8,
60 	ASCOT2E_DTV_UNKNOWN
61 };
62 
63 struct ascot2e_band_sett {
64 	u8	if_out_sel;
65 	u8	agc_sel;
66 	u8	mix_oll;
67 	u8	rf_gain;
68 	u8	if_bpf_gc;
69 	u8	fif_offset;
70 	u8	bw_offset;
71 	u8	bw;
72 	u8	rf_oldet;
73 	u8	if_bpf_f0;
74 };
75 
76 #define ASCOT2E_AUTO		0xff
77 #define ASCOT2E_OFFSET(ofs)	((u8)(ofs) & 0x1F)
78 #define ASCOT2E_BW_6		0x00
79 #define ASCOT2E_BW_7		0x01
80 #define ASCOT2E_BW_8		0x02
81 #define ASCOT2E_BW_1_7		0x03
82 
83 static struct ascot2e_band_sett ascot2e_sett[] = {
84 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
85 	  ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
86 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
87 	  ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
88 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
89 	  ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7,  0x0B, 0x00 },
90 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
91 	  ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8,  0x0B, 0x00 },
92 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
93 	ASCOT2E_OFFSET(-10), ASCOT2E_OFFSET(-16), ASCOT2E_BW_1_7, 0x0B, 0x00 },
94 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
95 	  ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
96 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
97 	  ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
98 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
99 	  ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7,  0x0B, 0x00 },
100 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
101 	  ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8,  0x0B, 0x00 },
102 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03,
103 	  ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-8), ASCOT2E_BW_6,  0x09, 0x00 },
104 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03,
105 	  ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(-1), ASCOT2E_BW_8,  0x09, 0x00 },
106 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01,
107 	  ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_6,  0x09, 0x00 },
108 	{ ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01,
109 	  ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(2),  ASCOT2E_BW_8,  0x09, 0x00 }
110 };
111 
112 static void ascot2e_i2c_debug(struct ascot2e_priv *priv,
113 			      u8 reg, u8 write, const u8 *data, u32 len)
114 {
115 	dev_dbg(&priv->i2c->dev, "ascot2e: I2C %s reg 0x%02x size %d\n",
116 		(write == 0 ? "read" : "write"), reg, len);
117 	print_hex_dump_bytes("ascot2e: I2C data: ",
118 		DUMP_PREFIX_OFFSET, data, len);
119 }
120 
121 static int ascot2e_write_regs(struct ascot2e_priv *priv,
122 			      u8 reg, const u8 *data, u32 len)
123 {
124 	int ret;
125 	u8 buf[MAX_WRITE_REGSIZE + 1];
126 	struct i2c_msg msg[1] = {
127 		{
128 			.addr = priv->i2c_address,
129 			.flags = 0,
130 			.len = len + 1,
131 			.buf = buf,
132 		}
133 	};
134 
135 	if (len + 1 > sizeof(buf)) {
136 		dev_warn(&priv->i2c->dev,"wr reg=%04x: len=%d is too big!\n",
137 			 reg, len + 1);
138 		return -E2BIG;
139 	}
140 
141 	ascot2e_i2c_debug(priv, reg, 1, data, len);
142 	buf[0] = reg;
143 	memcpy(&buf[1], data, len);
144 	ret = i2c_transfer(priv->i2c, msg, 1);
145 	if (ret >= 0 && ret != 1)
146 		ret = -EREMOTEIO;
147 	if (ret < 0) {
148 		dev_warn(&priv->i2c->dev,
149 			"%s: i2c wr failed=%d reg=%02x len=%d\n",
150 			KBUILD_MODNAME, ret, reg, len);
151 		return ret;
152 	}
153 	return 0;
154 }
155 
156 static int ascot2e_write_reg(struct ascot2e_priv *priv, u8 reg, u8 val)
157 {
158 	u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
159 
160 	return ascot2e_write_regs(priv, reg, &tmp, 1);
161 }
162 
163 static int ascot2e_read_regs(struct ascot2e_priv *priv,
164 			     u8 reg, u8 *val, u32 len)
165 {
166 	int ret;
167 	struct i2c_msg msg[2] = {
168 		{
169 			.addr = priv->i2c_address,
170 			.flags = 0,
171 			.len = 1,
172 			.buf = &reg,
173 		}, {
174 			.addr = priv->i2c_address,
175 			.flags = I2C_M_RD,
176 			.len = len,
177 			.buf = val,
178 		}
179 	};
180 
181 	ret = i2c_transfer(priv->i2c, &msg[0], 1);
182 	if (ret >= 0 && ret != 1)
183 		ret = -EREMOTEIO;
184 	if (ret < 0) {
185 		dev_warn(&priv->i2c->dev,
186 			"%s: I2C rw failed=%d addr=%02x reg=%02x\n",
187 			KBUILD_MODNAME, ret, priv->i2c_address, reg);
188 		return ret;
189 	}
190 	ret = i2c_transfer(priv->i2c, &msg[1], 1);
191 	if (ret >= 0 && ret != 1)
192 		ret = -EREMOTEIO;
193 	if (ret < 0) {
194 		dev_warn(&priv->i2c->dev,
195 			"%s: i2c rd failed=%d addr=%02x reg=%02x\n",
196 			KBUILD_MODNAME, ret, priv->i2c_address, reg);
197 		return ret;
198 	}
199 	ascot2e_i2c_debug(priv, reg, 0, val, len);
200 	return 0;
201 }
202 
203 static int ascot2e_read_reg(struct ascot2e_priv *priv, u8 reg, u8 *val)
204 {
205 	return ascot2e_read_regs(priv, reg, val, 1);
206 }
207 
208 static int ascot2e_set_reg_bits(struct ascot2e_priv *priv,
209 				u8 reg, u8 data, u8 mask)
210 {
211 	int res;
212 	u8 rdata;
213 
214 	if (mask != 0xff) {
215 		res = ascot2e_read_reg(priv, reg, &rdata);
216 		if (res != 0)
217 			return res;
218 		data = ((data & mask) | (rdata & (mask ^ 0xFF)));
219 	}
220 	return ascot2e_write_reg(priv, reg, data);
221 }
222 
223 static int ascot2e_enter_power_save(struct ascot2e_priv *priv)
224 {
225 	u8 data[2];
226 
227 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
228 	if (priv->state == STATE_SLEEP)
229 		return 0;
230 	data[0] = 0x00;
231 	data[1] = 0x04;
232 	ascot2e_write_regs(priv, 0x14, data, 2);
233 	ascot2e_write_reg(priv, 0x50, 0x01);
234 	priv->state = STATE_SLEEP;
235 	return 0;
236 }
237 
238 static int ascot2e_leave_power_save(struct ascot2e_priv *priv)
239 {
240 	u8 data[2] = { 0xFB, 0x0F };
241 
242 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
243 	if (priv->state == STATE_ACTIVE)
244 		return 0;
245 	ascot2e_write_regs(priv, 0x14, data, 2);
246 	ascot2e_write_reg(priv, 0x50, 0x00);
247 	priv->state = STATE_ACTIVE;
248 	return 0;
249 }
250 
251 static int ascot2e_init(struct dvb_frontend *fe)
252 {
253 	struct ascot2e_priv *priv = fe->tuner_priv;
254 
255 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
256 	return ascot2e_leave_power_save(priv);
257 }
258 
259 static void ascot2e_release(struct dvb_frontend *fe)
260 {
261 	struct ascot2e_priv *priv = fe->tuner_priv;
262 
263 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
264 	kfree(fe->tuner_priv);
265 	fe->tuner_priv = NULL;
266 }
267 
268 static int ascot2e_sleep(struct dvb_frontend *fe)
269 {
270 	struct ascot2e_priv *priv = fe->tuner_priv;
271 
272 	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
273 	ascot2e_enter_power_save(priv);
274 	return 0;
275 }
276 
277 static enum ascot2e_tv_system_t ascot2e_get_tv_system(struct dvb_frontend *fe)
278 {
279 	enum ascot2e_tv_system_t system = ASCOT2E_DTV_UNKNOWN;
280 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
281 	struct ascot2e_priv *priv = fe->tuner_priv;
282 
283 	if (p->delivery_system == SYS_DVBT) {
284 		if (p->bandwidth_hz <= 5000000)
285 			system = ASCOT2E_DTV_DVBT_5;
286 		else if (p->bandwidth_hz <= 6000000)
287 			system = ASCOT2E_DTV_DVBT_6;
288 		else if (p->bandwidth_hz <= 7000000)
289 			system = ASCOT2E_DTV_DVBT_7;
290 		else if (p->bandwidth_hz <= 8000000)
291 			system = ASCOT2E_DTV_DVBT_8;
292 		else {
293 			system = ASCOT2E_DTV_DVBT_8;
294 			p->bandwidth_hz = 8000000;
295 		}
296 	} else if (p->delivery_system == SYS_DVBT2) {
297 		if (p->bandwidth_hz <= 5000000)
298 			system = ASCOT2E_DTV_DVBT2_5;
299 		else if (p->bandwidth_hz <= 6000000)
300 			system = ASCOT2E_DTV_DVBT2_6;
301 		else if (p->bandwidth_hz <= 7000000)
302 			system = ASCOT2E_DTV_DVBT2_7;
303 		else if (p->bandwidth_hz <= 8000000)
304 			system = ASCOT2E_DTV_DVBT2_8;
305 		else {
306 			system = ASCOT2E_DTV_DVBT2_8;
307 			p->bandwidth_hz = 8000000;
308 		}
309 	} else if (p->delivery_system == SYS_DVBC_ANNEX_A) {
310 		if (p->bandwidth_hz <= 6000000)
311 			system = ASCOT2E_DTV_DVBC_6;
312 		else if (p->bandwidth_hz <= 8000000)
313 			system = ASCOT2E_DTV_DVBC_8;
314 	}
315 	dev_dbg(&priv->i2c->dev,
316 		"%s(): ASCOT2E DTV system %d (delsys %d, bandwidth %d)\n",
317 		__func__, (int)system, p->delivery_system, p->bandwidth_hz);
318 	return system;
319 }
320 
321 static int ascot2e_set_params(struct dvb_frontend *fe)
322 {
323 	u8 data[10];
324 	u32 frequency;
325 	enum ascot2e_tv_system_t tv_system;
326 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
327 	struct ascot2e_priv *priv = fe->tuner_priv;
328 
329 	dev_dbg(&priv->i2c->dev, "%s(): tune frequency %dkHz\n",
330 		__func__, p->frequency / 1000);
331 	tv_system = ascot2e_get_tv_system(fe);
332 
333 	if (tv_system == ASCOT2E_DTV_UNKNOWN) {
334 		dev_dbg(&priv->i2c->dev, "%s(): unknown DTV system\n",
335 			__func__);
336 		return -EINVAL;
337 	}
338 	if (priv->set_tuner)
339 		priv->set_tuner(priv->set_tuner_data, 1);
340 	frequency = roundup(p->frequency / 1000, 25);
341 	if (priv->state == STATE_SLEEP)
342 		ascot2e_leave_power_save(priv);
343 
344 	/* IF_OUT_SEL / AGC_SEL setting */
345 	data[0] = 0x00;
346 	if (ascot2e_sett[tv_system].agc_sel != ASCOT2E_AUTO) {
347 		/* AGC pin setting from parameter table */
348 		data[0] |= (u8)(
349 			(ascot2e_sett[tv_system].agc_sel & 0x03) << 3);
350 	}
351 	if (ascot2e_sett[tv_system].if_out_sel != ASCOT2E_AUTO) {
352 		/* IFOUT pin setting from parameter table */
353 		data[0] |= (u8)(
354 			(ascot2e_sett[tv_system].if_out_sel & 0x01) << 2);
355 	}
356 	/* Set bit[4:2] only */
357 	ascot2e_set_reg_bits(priv, 0x05, data[0], 0x1c);
358 	/* 0x06 - 0x0F */
359 	/* REF_R setting (0x06) */
360 	if (tv_system == ASCOT2E_DTV_DVBC_6 ||
361 			tv_system == ASCOT2E_DTV_DVBC_8) {
362 		/* xtal, xtal*2 */
363 		data[0] = (frequency > 500000) ? 16 : 32;
364 	} else {
365 		/* xtal/8, xtal/4 */
366 		data[0] = (frequency > 500000) ? 2 : 4;
367 	}
368 	/* XOSC_SEL=100uA */
369 	data[1] = 0x04;
370 	/* KBW setting (0x08), KC0 setting (0x09), KC1 setting (0x0A) */
371 	if (tv_system == ASCOT2E_DTV_DVBC_6 ||
372 			tv_system == ASCOT2E_DTV_DVBC_8) {
373 		data[2] = 18;
374 		data[3] = 120;
375 		data[4] = 20;
376 	} else {
377 		data[2] = 48;
378 		data[3] = 10;
379 		data[4] = 30;
380 	}
381 	/* ORDER/R2_RANGE/R2_BANK/C2_BANK setting (0x0B) */
382 	if (tv_system == ASCOT2E_DTV_DVBC_6 ||
383 			tv_system == ASCOT2E_DTV_DVBC_8)
384 		data[5] = (frequency > 500000) ? 0x08 : 0x0c;
385 	else
386 		data[5] = (frequency > 500000) ? 0x30 : 0x38;
387 	/* Set MIX_OLL (0x0C) value from parameter table */
388 	data[6] = ascot2e_sett[tv_system].mix_oll;
389 	/* Set RF_GAIN (0x0D) setting from parameter table */
390 	if (ascot2e_sett[tv_system].rf_gain == ASCOT2E_AUTO) {
391 		/* RF_GAIN auto control enable */
392 		ascot2e_write_reg(priv, 0x4E, 0x01);
393 		/* RF_GAIN Default value */
394 		data[7] = 0x00;
395 	} else {
396 		/* RF_GAIN auto control disable */
397 		ascot2e_write_reg(priv, 0x4E, 0x00);
398 		data[7] = ascot2e_sett[tv_system].rf_gain;
399 	}
400 	/* Set IF_BPF_GC/FIF_OFFSET (0x0E) value from parameter table */
401 	data[8] = (u8)((ascot2e_sett[tv_system].fif_offset << 3) |
402 		(ascot2e_sett[tv_system].if_bpf_gc & 0x07));
403 	/* Set BW_OFFSET (0x0F) value from parameter table */
404 	data[9] = ascot2e_sett[tv_system].bw_offset;
405 	ascot2e_write_regs(priv, 0x06, data, 10);
406 	/*
407 	 * 0x45 - 0x47
408 	 * LNA optimization setting
409 	 * RF_LNA_DIST1-5, RF_LNA_CM
410 	 */
411 	if (tv_system == ASCOT2E_DTV_DVBC_6 ||
412 			tv_system == ASCOT2E_DTV_DVBC_8) {
413 		data[0] = 0x0F;
414 		data[1] = 0x00;
415 		data[2] = 0x01;
416 	} else {
417 		data[0] = 0x0F;
418 		data[1] = 0x00;
419 		data[2] = 0x03;
420 	}
421 	ascot2e_write_regs(priv, 0x45, data, 3);
422 	/* 0x49 - 0x4A
423 	 Set RF_OLDET_ENX/RF_OLDET_OLL value from parameter table */
424 	data[0] = ascot2e_sett[tv_system].rf_oldet;
425 	/* Set IF_BPF_F0 value from parameter table */
426 	data[1] = ascot2e_sett[tv_system].if_bpf_f0;
427 	ascot2e_write_regs(priv, 0x49, data, 2);
428 	/*
429 	 * Tune now
430 	 * RFAGC fast mode / RFAGC auto control enable
431 	 * (set bit[7], bit[5:4] only)
432 	 * vco_cal = 1, set MIX_OL_CPU_EN
433 	 */
434 	ascot2e_set_reg_bits(priv, 0x0c, 0x90, 0xb0);
435 	/* Logic wake up, CPU wake up */
436 	data[0] = 0xc4;
437 	data[1] = 0x40;
438 	ascot2e_write_regs(priv, 0x03, data, 2);
439 	/* 0x10 - 0x14 */
440 	data[0] = (u8)(frequency & 0xFF);         /* 0x10: FRF_L */
441 	data[1] = (u8)((frequency >> 8) & 0xFF);  /* 0x11: FRF_M */
442 	data[2] = (u8)((frequency >> 16) & 0x0F); /* 0x12: FRF_H (bit[3:0]) */
443 	/* 0x12: BW (bit[5:4]) */
444 	data[2] |= (u8)(ascot2e_sett[tv_system].bw << 4);
445 	data[3] = 0xFF; /* 0x13: VCO calibration enable */
446 	data[4] = 0xFF; /* 0x14: Analog block enable */
447 	/* Tune (Burst write) */
448 	ascot2e_write_regs(priv, 0x10, data, 5);
449 	msleep(50);
450 	/* CPU deep sleep */
451 	ascot2e_write_reg(priv, 0x04, 0x00);
452 	/* Logic sleep */
453 	ascot2e_write_reg(priv, 0x03, 0xC0);
454 	/* RFAGC normal mode (set bit[5:4] only) */
455 	ascot2e_set_reg_bits(priv, 0x0C, 0x00, 0x30);
456 	priv->frequency = frequency;
457 	return 0;
458 }
459 
460 static int ascot2e_get_frequency(struct dvb_frontend *fe, u32 *frequency)
461 {
462 	struct ascot2e_priv *priv = fe->tuner_priv;
463 
464 	*frequency = priv->frequency * 1000;
465 	return 0;
466 }
467 
468 static const struct dvb_tuner_ops ascot2e_tuner_ops = {
469 	.info = {
470 		.name = "Sony ASCOT2E",
471 		.frequency_min_hz  =    1 * MHz,
472 		.frequency_max_hz  = 1200 * MHz,
473 		.frequency_step_hz =   25 * kHz,
474 	},
475 	.init = ascot2e_init,
476 	.release = ascot2e_release,
477 	.sleep = ascot2e_sleep,
478 	.set_params = ascot2e_set_params,
479 	.get_frequency = ascot2e_get_frequency,
480 };
481 
482 struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
483 				    const struct ascot2e_config *config,
484 				    struct i2c_adapter *i2c)
485 {
486 	u8 data[4];
487 	struct ascot2e_priv *priv = NULL;
488 
489 	priv = kzalloc(sizeof(struct ascot2e_priv), GFP_KERNEL);
490 	if (priv == NULL)
491 		return NULL;
492 	priv->i2c_address = (config->i2c_address >> 1);
493 	priv->i2c = i2c;
494 	priv->set_tuner_data = config->set_tuner_priv;
495 	priv->set_tuner = config->set_tuner_callback;
496 
497 	if (fe->ops.i2c_gate_ctrl)
498 		fe->ops.i2c_gate_ctrl(fe, 1);
499 
500 	/* 16 MHz xTal frequency */
501 	data[0] = 16;
502 	/* VCO current setting */
503 	data[1] = 0x06;
504 	/* Logic wake up, CPU boot */
505 	data[2] = 0xC4;
506 	data[3] = 0x40;
507 	ascot2e_write_regs(priv, 0x01, data, 4);
508 	/* RFVGA optimization setting (RF_DIST0 - RF_DIST2) */
509 	data[0] = 0x10;
510 	data[1] = 0x3F;
511 	data[2] = 0x25;
512 	ascot2e_write_regs(priv, 0x22, data, 3);
513 	/* PLL mode setting */
514 	ascot2e_write_reg(priv, 0x28, 0x1e);
515 	/* RSSI setting */
516 	ascot2e_write_reg(priv, 0x59, 0x04);
517 	/* TODO check CPU HW error state here */
518 	msleep(80);
519 	/* Xtal oscillator current control setting */
520 	ascot2e_write_reg(priv, 0x4c, 0x01);
521 	/* XOSC_SEL=100uA */
522 	ascot2e_write_reg(priv, 0x07, 0x04);
523 	/* CPU deep sleep */
524 	ascot2e_write_reg(priv, 0x04, 0x00);
525 	/* Logic sleep */
526 	ascot2e_write_reg(priv, 0x03, 0xc0);
527 	/* Power save setting */
528 	data[0] = 0x00;
529 	data[1] = 0x04;
530 	ascot2e_write_regs(priv, 0x14, data, 2);
531 	ascot2e_write_reg(priv, 0x50, 0x01);
532 	priv->state = STATE_SLEEP;
533 
534 	if (fe->ops.i2c_gate_ctrl)
535 		fe->ops.i2c_gate_ctrl(fe, 0);
536 
537 	memcpy(&fe->ops.tuner_ops, &ascot2e_tuner_ops,
538 				sizeof(struct dvb_tuner_ops));
539 	fe->tuner_priv = priv;
540 	dev_info(&priv->i2c->dev,
541 		"Sony ASCOT2E attached on addr=%x at I2C adapter %p\n",
542 		priv->i2c_address, priv->i2c);
543 	return fe;
544 }
545 EXPORT_SYMBOL(ascot2e_attach);
546 
547 MODULE_DESCRIPTION("Sony ASCOT2E terr/cab tuner driver");
548 MODULE_AUTHOR("info@netup.ru");
549 MODULE_LICENSE("GPL");
550